Devoicing
v. 使清音化；浊音清化（devoice的ing形式）
🗣️ 情景例句
You probably heard about it. We have private teachers in our holiday.
或许你已经听说过。我们交大的学生在假期间做家教。
If the old dog barks,he gives counsel.
老狗叫，是忠告。
What else does he say?
他还说了些什么？